From Alan Trimble — more encouraging news!
The new, small cohort of Pacific Oyster larvae is still present
and growing at a better pace than the last cohort did at this size.
Apparently the small summer storm didn’t knock them out, and
the new wave of anchovies that is dominating the southern
reaches hasn’t eaten them all – yet.
The chances of this group making it to spatfall are complicated by
two recent clam spawnings (up to 5,000/20 gal at some sites), the
addition of anchovies as predators, and the lowered odds of stable,
warm weather persisting for 2+ more weeks.
Our optimism is based on the good growth (20+ microns in 2 days) and healthy swimming behavior we see in today’s samples (per 20 gallons):
Site Low Count High Count Max Size (microns)
Lewis Slough 156 164 130 small umbo
Long Isl Slough 40 99 110 early umbo
Cougar Bend 147 225 130
Naselle Bridge 4 10 110
Mill Channel 135 336 110
Peterson Stn 75 195 110
Smokey Hollow 110 123 130
Bear River 169 255 130
We will sample again on Friday and we plan to retrieve and replace our
shell strings on Saturday to determine the extent of any spatfall
from the last cohort and prepare for any that may come in th future
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